LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Platinum group metals bulk analysis in automobile catalyst recycling material by laser-induced breakdown spectroscopy M. Kompitsas, I. Fasaki, Nikolaos Michos, George Asimellis Recyled Materials Andor iStar ICCD Jobin-Yvon HRP
Laser: Nd:YAG
Gate Delay: 10.000us
Gate Width: 5.000us
This work aims to assist in the rapid determination of platinum group metals in recycled catalytic converters. Samples extracted from slurry were ground and pressed into pellets for analysis. The aim of this work was to establish concentration ranges over which good calibration performance might be expected - hence lower LODs would be expected if this had been the aim.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Rh 9.0000 (Lowest Detected Concentration) 369.2400 N/A Univariate 4.0000-7910.0000 Worst RSD were greater than 5%, but fall to 2.65% for lower concentrations. Acceptable performance of 3 orders of magnitude of concentration.
Pd 127.0000 (Lowest Detected Concentration) 340.4600 342.12, 343.34, 344.14, 346.07nm Univariate 127.0000-54380.0000 RSD<2% and R>0.908 over 3 orders of magnitude concentration.
Pt 20.0000 (Lowest Detected Concentration) 270.2400 270.59nm, 271.90nm, 273.39nm Univariate 20.0000-42170.0000 Calibration curve was constructed using the average intensity across the 270.24, 270.59, 271.90 and 273.39nm lines. Calibration RSD<3% and R^2=0.9527 achieved across 4 orders of magnitude concentration range.

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes